You definitely don't need to jump out of the back of a plane to use a Montague Paratrooper Folding Bike ($775-$850), but you'd look a lot more badass if you did. These are the same bikes used by American military paratroopers, so you know they're built to handle punishment, while retaining the ability to collapse into a small, portable package. This makes them ideal for stashing in the trunk of your car, boat, RV, or plane — any vehicle where space is at a premium — and then quickly deploy them with no need for tools.